Four indices of medical management were included to perform grey forecasting on medical management in a ward of a certain hospital. GM (1, 1) models are accurate, effective and practical in forecasting the indices of medical management. GM (1, 1) models of historical, fully updated and new information data were established with a recovery rate. Accuracy of the different models was compared to verify the new information priority principle in the Grey Model, which suggested that GM (1, 1) models should be chosen according to different demands.